soft wash dwell time

Dwell time does the work, not the nozzle

Organic growth dies while the solution sits. Pressure is how people scar a house trying to hurry that.

Algae and mildew are alive. Sodium hypochlorite has to stay on them long enough to kill the colony. That pause is dwell time. You will see the green and black change while we are still there, especially on vinyl and painted brick. Roofs often look better the same day and more even after the next rain, because the dead film releases.

Skipping the dwell and “blasting it off” is how wand marks happen. The growth is shaved, the surface is cut, and the roots of the problem are still in the pores. It looks cleaner for a month. If the surface was paint, stain, stucco texture, or shingle granules, force was the wrong tool.

We do not walk away and let a mix dry in the sun as a crust. Dwell, then rinse. If a section needs a second light application, that is a judgment on the stain, not a failure of the first pass. You should be able to ask which walls got a second pass and why.

The service this belongs to is House soft washing.